iOS specific removals

[0.54]

Welcome to the February 2018 release of React Native! This release includes work done by the React Native team and the community in January, and there are some big changes here after the holidays. Thanks for 270 commits from 87 contributors, you all are great! Here are a few highlights from the release:

Long awaited Blob changes: upload, download, fetch locally, and more

Sticky headers now work on inverted Lists

Update to the newest React, which deprecated some lifecycle methods and added new ones – expect Yellowbox until React Native is updated

Space-evenly is now there (sorry for the confusion with 0.52's release notes)

A lot of under-the-covers work on Yoga, iOS's Text and TextInput, and a ton of other areas

Multiple crash fixes

The changelog is arranged by the customary added, removed, changed, and fixed plus internal; the changes are also organized by platform.

Added

✨ Blobs now can be: made from Strings, loaded by File using a FileReader API, uploaded and downloaded via XMLHttpRequest#fetch, and fetched on files to a local blob consistently (be56a3e and 854c233 by @satya164 and @fkgozali)

[0.53]

Welcome to the January 2018 release of React Native. The CLI now supports --port for both platforms, a few components were made to support consistent props across both platforms, and various fixes were made. There was a lot of under-the-cover work done with more test improvements and dependency updates. 118 commits were made by 43 contributors 🎉.

[0.52.0] - 2018-01-07

This changelog has been prepared by Ryan Turner (@turnrye) - thank you for
your time and making such a detailed changelog 🔥🔥

This release had a lot of work around the bundler and packager, a ton of
bugfixes, and updates to many of React Native's dependencies. Lots of
under-the-hood work was done as well to improve the layout engine. Happy new
year!

If you would like to help us with the next release changelog, please contact
@grabbou